I tried to view the SSRS report in Silverlight appliation Using this Sofware. I got the following error eventhough i followed all steps in the "Get Started" doc.

Also I cross verified following steps in my files. Everything is fine.

I'm using MSSQLSERVER 10.5 instead of MSSQLSERVER 10.1 Version. Is it make a problem?
Please help me immediately on this.

System.Web.Services.Protocols.SoapException: You have attempted to use a rendering extension that is either not registered for this report server or it is not supported in this edition of Reporting Services. ---> Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: You have attempted to use a rendering extension that is either not registered for this report server or it is not supported in this edition of Reporting Services.
at Microsoft.ReportingServices.WebServer.ReportExecution2005Impl.InternalRender(String Format, String DeviceInfo, PageCountMode pageCountMode, Stream& Result, String& Extension, String& MimeType, String& Encoding, Warning[]& Warnings, String[]& StreamIds)
at Microsoft.ReportingServices.WebServer.ReportExecution2005Impl.Render(String Format, String DeviceInfo, PageCountMode pageCountMode, Byte[]& Result, String& Extension, String& MimeType, String& Encoding, Warning[]& Warnings, String[]& StreamIds)
at Microsoft.ReportingServices.WebServer.ReportExecutionService.Render(String Format, String DeviceInfo, Byte[]& Result, Stri

Please, pay attention to the 6 step of the following article:
http://helpcenter.perpetuumsoft.com/KB/a92/getting-started-silverlight-viewer-reporting-services.aspx?KBSearchID=0
Which SQL Server Edition do you have Enterprise, Standard or Developer?
Rendering Extensions are required for our component and they are not supported by Express Edition.
If you have appropriate SQL Server Edition and they are not installed by installer then you can install them manually:
http://helpcenter.perpetuumsoft.com/KB/a353/how-to-add-rendering-extension-to-reporting-services.aspx?KBSearchID=0
Best regards,
Perpetuum Software Support Team

As a Gold Certified Partner in the Microsoft Partner program, Perpetuum Software has been
providing a wide range of Microsoft Visual Studio components for over 8 years.
Perpetuum Software product lines include WinForms, ASP.NET, Silverlight, and Mobile components,
and tools for SQL Server Reporting Services. Among them are .NET reporting tool,
OLAP component, and such data visualization libraries as gauge and charting products.
All the products can be ordered via Share-It and PayPro services.